Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Nils Thomas Ahlberg, MD

Individual provider Anesthesiology Physician · NPI 1831149400

Nils Thomas Ahlberg, MD is an Anesthesiology in San Francisco, California. Qualified in 1979, 47 years ago. Practices with Anesthesiologists Medical Group of San Francisco Inc, a 16-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
47
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

900 Hyde St
San Francisco, CA 94109-4806
Phone: (415) 353-6000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A36935 (CA)

Record details

NPI number1831149400
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 12, 2006
Last updated in NPPESJuly 13, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolOTHER
Graduated 1979 (47 years in practice)
Group practice Anesthesiologists Medical Group Of San Francisco Inc. — 16 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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